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/*******************************************************************************
* Copyright (c) MOBAC developers
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
// License: GPL. Copyright 2007 by Immanuel Scholz and others
package mobac.utilities;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import javax.swing.Box;
/**
* A wrapper for GridBagConstraints which has sane default static creators and
* member functions to chain calling.
*
* @author imi
*/
public class GBC extends GridBagConstraints {
private static final long serialVersionUID = 1L;
/**
* Use public static creator functions to create an GBC.
*/
private GBC() {
}
/**
* Create a standard constraint (which is not the last).
*
* @return A standard constraint with no filling.
*/
public static GBC std() {
GBC c = new GBC();
c.anchor = WEST;
return c;
}
/**
* Create the constraint for the last elements on a line.
*
* @return A constraint which indicates the last item on a line.
*/
public static GBC eol() {
GBC c = std();
c.gridwidth = REMAINDER;
return c;
}
/**
* Create the constraint for the last elements on a line and on a paragraph.
* This is merely a shortcut for eol().insets(0,0,0,10)
*
* @return A constraint which indicates the last item on a line.
*/
public static GBC eop() {
return eol().insets(0, 0, 0, 10);
}
/**
* Try to fill both, horizontal and vertical
*
* @return This constraint for chaining.
*/
public GBC fill() {
return fill(BOTH);
}
public GBC toggleEol() {
if (gridwidth == GBC.REMAINDER)
gridwidth = 1;
else
gridwidth = GBC.REMAINDER;
return this;
}
public GBC gridwidth(int value) {
gridwidth = value;
return this;
}
public GBC gridheight(int value) {
gridheight = value;
return this;
}
public GBC gridx(int value) {
gridx = value;
return this;
}
public GBC gridxy(int x, int y) {
gridx = x;
gridy = y;
return this;
}
public GBC gridy(int value) {
gridy = value;
return this;
}
/**
* Set fill to the given value
*
* @param value
* The filling value, either NONE, HORIZONTAL, VERTICAL or BOTH
* @return This constraint for chaining.
*/
public GBC fill(int value) {
fill = value;
if (value == HORIZONTAL || value == BOTH)
weightx = 1.0;
if (value == VERTICAL || value == BOTH)
weighty = 1.0;
return this;
}
public GBC fillH() {
return fill(GBC.HORIZONTAL);
}
/**
* Set the anchor of this GBC to a.
*
* @param a
* The new anchor, e.g. GBC.CENTER or GBC.EAST.
* @return This constraint for chaining.
*/
public GBC anchor(int a) {
anchor = a;
return this;
}
/**
* Adds insets to this GBC.
*
* @param left
* The left space of the insets
* @param top
* The top space of the insets
* @param right
* The right space of the insets
* @param bottom
* The bottom space of the insets
* @return This constraint for chaining.
*/
public GBC insets(int left, int top, int right, int bottom) {
insets = new Insets(top, left, bottom, right);
return this;
}
/**
* This is a helper to easily create a glue with a minimum default value.
*
* @param x
* If higher than 0, this will be a horizontal glue with x as
* minimum horizontal strut.
* @param y
* If higher than 0, this will be a vertical glue with y as
* minimum vertical strut.
*/
public static Component glue(int x, int y) {
short maxx = x > 0 ? Short.MAX_VALUE : 0;
short maxy = y > 0 ? Short.MAX_VALUE : 0;
return new Box.Filler(new Dimension(x, y), new Dimension(x, y), new Dimension(maxx, maxy));
}
}
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